1menu "Library routines" 2 3config CC_OPTIMIZE_LIBS_FOR_SPEED 4 bool "Optimize libraries for speed" 5 help 6 Enabling this option will pass "-O2" to gcc when compiling 7 under "lib" directory. 8 9 If unsure, say N. 10 11config HAVE_PRIVATE_LIBGCC 12 bool 13 14config USE_PRIVATE_LIBGCC 15 bool "Use private libgcc" 16 depends on HAVE_PRIVATE_LIBGCC 17 help 18 This option allows you to use the built-in libgcc implementation 19 of U-boot instead of the one privided by the compiler. 20 If unsure, say N. 21 22config SYS_HZ 23 int 24 default 1000 25 help 26 The frequency of the timer returned by get_timer(). 27 get_timer() must operate in milliseconds and this option must be 28 set to 1000. 29 30config SYS_VSNPRINTF 31 bool "Enable safe version of sprintf()" 32 help 33 Since sprintf() can overflow its buffer, it is common to use 34 snprintf() instead, which knows the buffer size and can avoid 35 overflow. However, this does increase code size slightly (for 36 Thumb-2, about 420 bytes). Enable this option for safety when 37 using sprintf() with data you do not control. 38 39config REGEX 40 bool "Enable regular expression support" 41 default y if NET 42 help 43 If this variable is defined, U-Boot is linked against the 44 SLRE (Super Light Regular Expression) library, which adds 45 regex support to some commands, for example "env grep" and 46 "setexpr". 47 48config LIB_RAND 49 bool "Pseudo-random library support " 50 help 51 This library provides pseudo-random number generator functions. 52 53source lib/rsa/Kconfig 54 55menu "Hashing Support" 56 57config SHA1 58 bool "Enable SHA1 support" 59 help 60 This option enables support of hashing using SHA1 algorithm. 61 The hash is calculated in software. 62 The SHA1 algorithm produces a 160-bit (20-byte) hash value 63 (digest). 64 65config SHA256 66 bool "Enable SHA256 support" 67 help 68 This option enables support of hashing using SHA256 algorithm. 69 The hash is calculated in software. 70 The SHA256 algorithm produces a 256-bit (32-byte) hash value 71 (digest). 72 73config SHA_HW_ACCEL 74 bool "Enable hashing using hardware" 75 help 76 This option enables hardware acceleration 77 for SHA1/SHA256 hashing. 78 This affects the 'hash' command and also the 79 hash_lookup_algo() function. 80 81config SHA_PROG_HW_ACCEL 82 bool "Enable Progressive hashing support using hardware" 83 depends on SHA_HW_ACCEL 84 help 85 This option enables hardware-acceleration for 86 SHA1/SHA256 progressive hashing. 87 Data can be streamed in a block at a time and the hashing 88 is performed in hardware. 89endmenu 90 91config ERRNO_STR 92 bool "Enable function for getting errno-related string message" 93 help 94 The function errno_str(int errno), returns a pointer to the errno 95 corresponding text message: 96 - if errno is null or positive number - a pointer to "Success" message 97 - if errno is negative - a pointer to errno related message 98 99endmenu 100